Cryptic crossword
1a So men turn to guru sticking to official policy (2-7)
7a Erected in the hall, a weird construction of bricks (4)
8a Object to the French steamer, non-stop (7)
9a Put in the picture? (5)
19a Inventor is done with innovation (6)
12a Warrior returning from Bali, a rum ascent (7)
15a Taken on by German, a German administrator (7)
18aVilify return of artist beside German river (5)
20a Once-over to observe twice (4,3)
22a Audacious Channel 4 drama
1d Frank and journalist began (6)